Machine for scraping and toothing veneer



' yscraping or UNITED sTATEs PATENT oEEioE.v

ALLEN GOODMAN AND LYMAN WHEELER, OF DANA, MASSACHUSETTS.

MACHINE FOR SCRAPINGr AND TOOTI-IING VIEJNElilt.`

Specification of Letters Patent No.

T0 all whom t may concern Be it nknown that we, ALLEN GOODMAN and LYMANWHEELER, both of Dana, in the county of Worcester and State ofMassachusetts, have invented a new and useful Machine for Scraping andToothing Veneer, and that the following description, t-aken inconnection with the accompanying drawings hereinafter referred to,fO-rms a full and eX act specification of the same, wherein we have setforth the nature and principles of our said invention by which it may bedistinguished from others of a similar class, together with such partsas we claim and desire to have secured to us by Letters Patent.

The figures of the accompanying plate of drawings represent ourimprovements.

Figure 1 is a plan or top view of our machine. Fig. 2 is a sideelevation of the same. Fig. 3 is a central longitudinal vertical sectionof the machine.

The Ioperations of scraping and toothing veneer, after it has been cutOr sawed out, have hitherto been done by hand, and are necessarilyattended with considerable expense, as the work can be done but slowlyin this manner.

By our improvements veneer can be scraped on one side, and toothed orroughened on the other, with much greater rapidity and with lessexpense, whilethe work is much more evenly and accurately performed.

The most essential parts of our machine consist of a revolving cylinderin which the toothing knives are placed in a peculiar' position, that isbac-k of the axis of the said cylinder, and inclined from the same, anda large bed roll around which the veneer is bent and held, the veneerbeing fed along and kept in proper position, by suitable mechanicaldevices as will be hereinafter explained.

a a a in the drawings, represents Ithe framework Of the machine.

b is the driving shaft from which motion is communicated by pulleys c, cand the belt cl d to the knife cylinder, f f, which-revolves uponjournals in the movable framey g g g, the fulcra of which are placed at71 7L.

z' z' is a large bed roll to which motion is imparted as follows: On theend of the driving shaft b Zi is placed a drum lo which gives motion, bya hand Z Z, to the drum on the shaft of which is the pinion a, Fig. 3.This pinion engages with the gear wheel o on the 10,536, dated February14, 1854.

cross shaft p, which gives motion to t-he bed roll z' z', through thedrums g, q and hand r 7'. The veneer is fed in on the bed roll i andbent around the same by hand, so as to rest upon a circular bed, andpasses to the toothed knives s, s on the revolving cylinder f Theseknives are placed a little back' of the l axis Of the cylinder f f, andareinclined from the saine at a small angle, giving them a scrapinginstead of a cutting position, so as to prevent them from tearing theveneer, which result would happen if the knives were ot-herwise placed.The veneer in passing to the knives is held upon the bedroll by anadjustable spring plate t t, turning upon journals in the movable frameg g, and after being toothed by the knivesvs, s is held by anotherspring plate u and fed along by a notched roll c which has motionimparted to it by the drums w, w and the belt a. The Opposite side ofthe veneer can then be scraped or smoothed, by substituting smoothingtools for the toothed knives in the cylinder f f or by arranging thesmoothing tools on a separate cylinder for the purpose.

By the above described arrangement of devices, the veneer can be scrapedand toothed and also reduced to a uniform thickness, in `much less ytimeand with much greater accuracy than by hand, while the expense attendantupon the operation is materially diminished.

It will readily be seen thatthe large feeding bed roll around which theveneer is bent Y vand held, is an essential feature of our machine, ast-he veneer without such a bearing as this roll affords, would beliableto be torn and split bythe toothing tools.

Having tlius described Oulr improvements,

we shall state our claims as follows.

What we claim as our invention is@ A machine for scraping s and toothingveneer which has a large feeding bed roll around a portion of which theveneer is -bent and held, .and a revolving cylinder with scraping ortoothing tools Or knives,inclined back from the axis of the vsaidcylinder, yso

as to have a scraping instead of a cutting position, substantially asherein above de-` scribed. m

ALLEN GOODMAN. LYMAN WHEELER. Witnesses: s

DANIEL STONE, NELSON BLANTON.

